A127223 a(n) = (n^2)!/n!.

1, 1, 12, 60480, 871782912000, 129260083694424883200000, 516657398319307246483332566876160000000, 120690846038545150966716699071685590652292228448256000000000

Offset: 0

Author

Artur Jasinski, Jan 09 2007

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 0..21

Crossrefs

Cf. A127224, A127225.

Programs

Mathematica

Table[(n^2)!/(n!), {n, 0, 10}]

Extensions

a(0) = 1 prepended by Peter Luschny, May 20 2019